Question

please answer me this question ​

Answer 1

Answer:  (C.)  x + 31 = 0

Step-by-step explanation:

=>  $\frac{4}{x-1} = \frac{3}{x+7}$

=>  $4 ( x+7) = 3 (x-1)$      (on cross multiplying)

=>  $4x + 28 = 3x - 3$

=>  $4x - 3x = -3 - 28$

=>  $x = -31$

=>  $x + 31 = 0$

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Answer 2

Answer:

x+31=0

Step-by-step explanation:

4\x-1 = 3\x+7

4(x+7) = 3(x-1)

4x+28 = 3x-3

4x-3x = -28-3

x = -31

x+31 = 0